Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Arsenopyrite from
State Forest Quarry No. 2, Cobalt, East Hampton, Middlesex County, Connecticut, USA


Locality type:Quarry
Classification
Species:Arsenopyrite
Formula:FeAsS
Comments:plentiful as small grains and masses
Habit:anhedral, massive
Colour:gray
Quality for species:Poor for species, only of interest for locality collectors. (#)
Abundance at site:Common
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Arsenopyrite data
Locality Data:Click here to view State Forest Quarry No. 2, Cobalt, East Hampton, Middlesex County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:130261
Long-form Identifier:1:3:130261:5
GUID (UUID V4):0
Nearest other occurrences of Arsenopyrite
0.4km (0.2 miles) ⓘGreat Hill cobalt mines, Cobalt, East Hampton, Middlesex County, Connecticut, USA
3.8km (2.3 miles) ⓘStrickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
3.9km (2.5 miles) ⓘVespa stone quarry, East Hampton, Middlesex County, Connecticut, USA
4.6km (2.9 miles) ⓘWhite Rocks Quarry (Consolidated Quarry), White Rock Mining District, Middletown, Middlesex County, Connecticut, USA
5.2km (3.2 miles) ⓘState Farm Quarry (Road Metal Quarry), Middletown, Middlesex County, Connecticut, USA
5.2km (3.3 miles) ⓘMiddletown lead mines (Middletown Mine), Middletown, Middlesex County, Connecticut, USA
7.1km (4.4 miles) ⓘHale Quarry (Andrews Quarry; Glastonbury Quarry), Portland, Middlesex County, Connecticut, USA
7.4km (4.6 miles) ⓘAndrews Quarry (old Hale Quarry; Grandfather Andrews Quarry), Portland, Middlesex County, Connecticut, USA
41.4km (25.7 miles) ⓘBlue Stone Quarry, Waterbury, New Haven County, Connecticut, USA
46.6km (29.0 miles) ⓘSilver mine, Seymour, New Haven County, Connecticut, USA
References
Rocks & Min.: 70:403
 
and/or  
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